Foreign



y 11, 1954 E. E. HOWE Re. 23,826

I METHOD OF FORMING WELDING PROJECTIONS ON NUTS Original Filed June 2. 1950 N Invenfar .ZarZ Z,]2owe r d/Jam Jttorneys Reissued May 11, 1954 METHOD OF FORMING WELDING PROJECTIONS ON NUTS Earl E. Howe, Chicago, 111.

No. 2,612,647, dated October 7, 1952, Serlll N0- 185,'l'l7, June 2, 1950. mliclfllm for reissue November -Matter enclosed in heavy brackets rehsnc specification; matter printed In italics My invention relatesto nuts, and has for one purpow .to provide a nut an improvement in which can be applied to and secured in relation v to another part such as a sheet. I

Another purpose is-to provide a nut which can be quickly and economicallyapplied to'a sheet.

Another purpose is .to provide a nut and improved-means and method of securing the nut in relation to a sheet or other supporting member. Another purpose is to provide an improved weld nut with extrudedwelding projections. extending beyond the plane of one end of the nut.

Another purpose is to provide a nut which shall be efllcient and economical.

Other purposes will appear from time to time in the course of the specification and claim.

The present application is a division of my copending application Serial No. 560,984, flied in the United States Patent Oflice on October 30, 1944 now abandoned. v

I illustrate my invention more or less diagram- Figure 1 is a plan view of a form of my nut;c Figure 2 is a section on the line I--! of Pis ure 1;

Figure 3 is a perspective of the nut shown in Figures 1 and 2; and

Figure 4 is a diagrammatic illustration of a vertical section through a forming die and nut. Like parts are indicated by like symbols throughout the specification and drawings.

Referring to the drawings, 1 illustrate a nut matically in the accompanying drawings where- 2, 1953, Serial No. 389,908

1 Claim. (CL 10-86) appears in the original patent but forms no part of this indicates the additions made by reissue,

. 2 corners of the body i5 and or corner projections it.

strikes out the ears centric withthe center of the nut. As the metal is unconfined. it flows laterally outwardly under the die to produce the form of projection I8 shown in Figure 1. To form the projection II, it is n merely to place the body IS on an otherwise generally plane surface which has apertures appropriate to permit the metal to now.

downwardly or outwardly below or from the bottom or end of the body Ii which rests on the forming surface.

It will be realized that whereas I have described and shown a practical and operative device. nevertheless many changes may be made in size, shape, number and disposition of parts without departing from the spirit of the invention. I therefore wish my description and drawings to be taken as in a broad sense illustrative and diagrammatic, rather than as limiting me precisely to the precise showing.

The use and operation of my invention are as follows:

In the application of my invention, I may start with the conventional square nut, or with a slug I of metal, or with a section of wire, as the specific form of the nut may be widely varied.

While I do not wish to be limted to any specific shape of nut or any specific detail of forming or offsetting, a convenient arrangement is to employ a generally rectangular nut blank and to offset or having a generally square body II, which, for example, may be formed from a rectangular blank. ll indicates any suitable screw-threaded central aperture.

In the formation of the nut it is suitably struck by a die at its corners, the metal being left free to extend outwardly. The result is the provision of corner projections formed as at i6, ii the die is opened or apertured to permit the formation 0! projections l1, adapted for projection welding. It will be understood that the shape of the projections may be suitably varied, but I illustrate, as shown in detail in Figure 3, corner welding projections which extend outwardly from the generally plane surface of one end of the nut body II.

'I'henutisshowninFigure 1and2aswelded to any suitable sheet lb, with its screw-threaded aperture is aligned with any suitable aperture ii in the plate.

m the formation of my nut I may employ. for

outwardly spread its corners, as shown in Figure 1, by subjecting it to any suitable forming die. A practical forming die may have an internally arcuate or circular surface, as adapted to strike metal at such unsupported the corners, as indicated at its in Figure 1.

-i'. claim:

The method of punch forming a weld [nut] element by a single application of pressure, which includes providing a generally polygonal sided [rectangular nut] body having defined corners.

- [a central aperture] and parallel [plane] end faces.

supporting said [nut] body. except at localized areas under said corners, on a laterally unrestricted supporting surface, directing localized pressure solely against the corners of the [nut] body in a direction parallel withthe axis of the [nut] body and [against] opposite the unsupported areas of the corners of the [nut] body. while permitting longitudinal flow of part of the areas and simultaneously permitting unrestricted lateral flow of the metal displaced by the pressure against the and thereby. by single application Ilia indicates the inner suriace of the circular die which may be consame of pressure, rorming laterally extended ears and welding projections unitary therewith, with the welding projections extending beyond the plane or the end or the [nut] body.

Rdereneegcitedintheflleofthispatent 6 or the original patent UNITED STATES PATENTS Number Name Date I 2.054.187 Almdale' Sept. 15. 1936 2,106,139 Demoboeki -L' Jan. 11. 1938 Number Number 4 Name Date et al m 5, 1942 Banner Feb. 9, 1943 Cousino Mar. 18, 1943 Howe Nov. 30, 1943 La Barre Dec. 14, 1943 Huntoon Oct. 2, 1945 FOREIGN PATENTS coun ry Date Great Britain Oct. 16. 1935 J 

